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Spectrally efficient modulation formats for fast reconfigurable optical networks

Huynh, Tam (2014) Spectrally efficient modulation formats for fast reconfigurable optical networks. PhD thesis, Dublin City University.

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The desire for multi-media content and richly interactive data services is shaping a new era for telecommunications networks. Future networks will need to be capable of offering Triple Play, IPTV, Video-on-Demand, Voice-over-IP and High-Speed Internet Access, combined with guaranteed Quality of Service. These networks will employ optical transport networks with wavelength division multiplexing (WDM) technology, and advanced modulation formats, in order to achieve the high capacities required. In addition, given the bursty nature of this data it is expected that dynamic allocation of the bandwidth will be implemented to efficiently use the available capacity. The key component in these networks will be the tuneable laser transmitters that generate the different wavelength packets. This thesis has explored novel applications and implementations of the sample-grating distributed Bragg reflector (SG-DBR) lasers, in optical WDM networks. Through theory, simulations and experiments, the use of SG-DBR lasers for advanced modulation formats in fast reconfigurable networks has been investigated. Initial work focussed on the detailed characterization of the phase noise properties of the SG-DBR laser and their impact on coherent optical communications. Subsequent work in the thesis proposed techniques to overcome the limitations imposed by employing tuneable lasers with advanced modulation format transmission. Finally, the application of advanced modulation formats in dynamic optical packet switching scenarios employing SG-DBR laser has been evaluated.

Item Type:Thesis (PhD)
Date of Award:November 2014
Supervisor(s):Barry, Liam P.
Subjects:Engineering > Optical communication
Physical Sciences > Optoelectronics
Engineering > Telecommunication
Physical Sciences > Lasers
Engineering > Electronic engineering
Physical Sciences > Photonics
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Engineering and Computing > School of Electronic Engineering
Research Initiatives and Centres > Research Institute for Networks and Communications Engineering (RINCE)
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 3.0 License. View License
Funders:SFI, IRC
ID Code:19977
Deposited On:27 Nov 2014 14:12 by Liam Barry. Last Modified 27 Nov 2014 14:12

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